Buffing mechanism



Nov. 1, 1949. R. J. oLANDl-:R

BUFFING MECHANISM Filed Aug. 25, 1945 lzVen/or: Roland I OZamZer;

Patented Nov. 1, 1949 2,486,571 BUFFING MEGHANISM Roland J. Olander,Chicago, IlI'., assignor to W. H.

Miner, Inc., Chicago, Ill., a corporation of Dela- Ware ApplicationAugust 25, 1945, Serial No. .612,615

3 Claims.

This invention relates to improvements in buffng mechanisms for railwaycars.

One object of the invention is to provide a bufling mechanism forrailway cars including a buer face plate and spring resisted side stemsfor supporting the face plate from the usual end platform of the car,wherein the buffer side stems are readily removable without disturbingthe other parts of the mechanism by so constructing the parts that theside stems and their associated springs may be withdrawn through therear guide brackets for the stems.

Other objects of the invention will more clearly appear from thedescription and claims hereinater following.

In the drawing forming a part of this specilcation, Figure l is abroken,top plan view of the end platform and buffer face plate of arailway car, illustrating my improvements in connection therewith, theend platform being partly broken away to show the parts beneath thesame, the rear guide bracket for the buffer stem and the buffer sidestem spring being shown in horizontal section. Figure 2 is a horizontal,longitudinal sectional view taken through the rear guide bracket of thebuffer mechanism and showing the rear end portion of the buiferside stemin plan. Figure 3 is a front elevational view of the two-part bearingsleeve for the buffer side stem, looking from left to right in Figure 2.

In said drawing, I indicates the usual end platform of a passenger carand II, the buffer face plate. The end platform has a pocket I2 whichaccommodates a usual friction shock ab sorber, indicated by I3, but notshown in detail, which cooperates with a sliding buier center stem I4,which bears at its front end on the face plate II. At opposite sides ofthe center stem, the end platform I0 is provided with the usual guidesI5-I-5 for the buffer side stems, the guide at one side only of themechanism being shown in the drawing.

In carrying out my invention, I provide broadly a buler side stem A ateach side of the buffer center stem; a rear guide bracket B for eachside stem A; a collar C on each side stem; a two-part bearing sleeve Dwithin each rear bracket B; a buffer spring E associated with eachbulfer stem; and a retaining nut F at the end of each stem.

The side stem A is of the usual design, being pivotally connected at itsfront end to the buffer face plate in a well-known manner, the bufferface plate being provided with a bracket IE to 2 pivot pin I'I. As isthe usual practice, the front end portion of the stem A, which isindicated by I8, is of angular cross section and slidingly guided in theguide I5. The rear portion of the stem, which is indicated by I9, is. ofcylindrical cross section, thus providing an abutment shoulder 2li forthe collar C. The portion I9 of the side stem A is threaded. at the rearend to receive the usual retaining nut F.

The rear bearing bracket is flxedly mounted on the end platform I0 inthe usual manner and is provided with a tubular sleevelike portion 2l ofcylindrical form. The opening of the sleeve portion 2I, which opening isindicated by 22, is of relatively large diameter and has its longitudinal axisarranged lengthwise of the end platform ild is in longitudinalalignment with the guide The collar C has a cylindrical spring centeringportion 23 and a laterally projecting, annular flange 24 at the forwardend of the portion 23. The flange 24 is of lesser diameter than theopening 22 of the bracket B so that the collar may pass freely throughthe opening of the bracket,

25 The collar C is mounted on the portion It of the side stem, beingfreely slidable thereon. This collar normally abuts the rear end of theguide I5 and the shoulder 20 of the side stem A.

The bearing sleeve vD comprises two similar sections surrounding therodlike rear portion i9 of the side stem A within the bracket B. The twosections of the sleeve D together form a substantially cylindrical,tubular member, which is split in half lengthwise. The sleeve D has anoutstanding, annular flange 25 at the forward end bearing on the frontside of the tubular section 2I of the bearing bracket B. Forwardly ofthe flange, the sleeve D is provided with a forwardly projecting,cylindrical spring centering portion 26, corresponding in diameter tothe centering portion 23 of the Collar C.

The buffer side stem spring E is of the type usually employedinconnection with buffer side stems, being in the form of a helical coilsurrounding the stem. The spring E bears at its front and rear endsrespectively on the flange 24 of the collar C and the flange 25 of thetwopart sleeve D. The projection 23 on the collar C and the projection26 on the sleeve D, over which the opposite ends lof the spring aretelescoped, hold the same centered.

The nut F, which is threaded on the rear end of the side stem A, bearson a washer 2l in shoulwhich the front end of the stem is attached by adered engagement with the rear end of Athe guide bracket B to limitforward or outward movement of the side stem.

In removing the side stem, the same is rst detached from the face plateI I by removing the pivot pin l1. The split bearing sleeve D is thenpushed forwardly out of the bracket B against the resistance of thespring E until it is entirely clear of the bracket. The sections of thebearing sleeve D are then separated and removed. This leaves the openingof the bracket B clear for withdrawal of the side stem A, spring E, andcollar C. All of these parts may be removed as a unit by pulling theside stem with the spring E and collar C thereon rearwardly through theopening '22 of the bearing bracket B.

In assembling the side stem with the other parts, a proceduresubstantially the reverse to that just described is followed.

I claim: I

1. In a bufling mechanism, the combination with the end platform of acar; of a buffer face plate; a side stem for supporting said face platefrom the end platform; a spring surrounding the rear end portion of saidstem; a collar on said stem on which the front end of said spring bears;a rear supporting bracket for the side stem, said bracket having anopening therethrough of a size to permit withdrawal of the side stem,surrounding spring, and collar lengthwise therethrough; a longitudinallysplit, two-part removable bearing sleeve in which the rear end of theside stem is slidingly guided, said sleeve being seated in and fittingthe opening of said bracket with the parts thereof embracing said sternat opposite sides; and means for holding said sleeve against rearwardmovement in said bracket.

2. In a bufflng mechanism, the combination with the end platform of acar; of a buffer face plate; a side stem for supporting said face platefrom the end platform; a buing spring surrounding the rear end portionof said stem and yieldingly resisting inward movement of said stem; arear supporting bracket for the side stem, said bracket having anopening therethrough of a size to permit withdrawal of the side stem andsurrounding spring therethrough; and a longitudinally split, two-part,removable bearing sleeve in which the rear end of the side stem isslidingly guided, said sleeve being seated in and fitting the opening ofsaid bracket with the parts thereof embracing said stem, each of theparts of said sleeve having a flange at the front end thereof bearing onthe front end of said bracket to hold said parts against rearwardmovement, said sleeve bearing at its front end on the rear end of saidspring.

3. In a builing mechanism, the combination with the end platform of acar; of a buffer face plate; a side stem for supporting said face platefrom the end platform; a collar on said stem having shoulderedengagement with the stem to limit forward movement of the same on saidstem; a spring surrounding said stem rearwardly of said collar; a rearsupporting bracket for said side stem, said bracket having an openingtherethrough, through which said stem projects, said opening being of asize to permit lengthwise Withdrawal of the buffer stem therethroughwith the surrounding spring and collar thereon; a two piece, lengthwisesplit, bearing sleeve within the opening of said bracket embracing saidstem at opposite sides, each part of said sleeve having a flange at theforward end thereof bearing on the front end of said bracket, saidspring bearing at opposite ends on the rear side of the collar and thefront end of said sleeve; a nut on the rear end of said stem; and awasher interposed between said nut and the rear side of the bearingbracket.

ROLAND J. OLANDER.

REFERENCES CITED The following references are of record in the file ofpatent:

UNITED STATES PATENTS Number Name Date 1,051,039 Westlake et al. Jan.21, 1913 1,054,953 Westlake et al Mar. 4, 1913 2,437,429 Hossfeld Mar.9, 1948

